Report on a child process, rather than the test process.
Report on a child process, rather than the test process.

I was able to reproduce test hangs locally. It was a deadlock in MiniDumpWriteDump, on the NT loader lock. This is a documented risk of this method and can be resolved by taking the dump on a child process, rather than on the main test process.

BUG=
R=siggi@chromium.org

Review URL: https://codereview.appspot.com/215700043

google/syzygy,google/syzygy,wangming28/syzygy,Eloston/syzygy,google/syzygy,wangming28/syzygy,wangming28/syzygy,wangming28/syzygy,supriyantomaftuh/syzygy,supriyantomaftuh/syzygy,supriyantomaftuh/syzygy,Eloston/syzygy,supriyantomaftuh/syzygy,google/syzygy